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LIGHT AND SOUND
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what does the pencil show about?
Light is refracted when it passes from air into water
What do you see?
The numbers of 42
What do you see?
Rabbit
Mention three optical instruments that you know!
Microscope, Telescope, Glasses, Magnifying glass, etc
Can and spoon wil produce sound if we ... them.
hit
the wishtle can produce sound if we .... it.
Blow
The clear front part of the eye is ….
Cornea
The colored part of the eye is ….
iris
My lenses allow us to know the world of microorganisms such as bacteria. Who am I?
Microscope
I have a set of lenses that allows scientists to study and observe the universe and the galaxy where we live. Who am I?
Telescope
When light bounces back it is ….
reflected
Light travels in ... line
straight
Give three examples of opaque objects!
chair, desk, wall, briks, eood, etc
Give an example of natural source of light?
firefly, sun, stars, bioluminessences
.... is a form of energy that travels through space.
sound
The ear has three parts ….
the outer, middle, and inner ear
What are the three tiny bones in the middle ears?
Hammer, anvil, and stapes
Which part of the ear vibrates when sound waves come to ears?
ear drum
Which part of your ear can be seen in the mirror?
pinna / ear lobe
The volume of sound is measured in units called ….
decibels
Give an example of natural sound!
Confirmed by teacher
Give an example of a man-made sound!
confirmed by teacher
When people speak their … vibrate. (in our throat)
vocal chord
Sound is a form of energy produced by ….
vibration
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